jsat.linear.vectorcollection.lsh

Class RandomProjectionLSH.RandomProjectionLSHFactory<V extends Vec>

java.lang.Object

jsat.linear.vectorcollection.lsh.RandomProjectionLSH.RandomProjectionLSHFactory<V>

All Implemented Interfaces:

Serializable, Cloneable, VectorCollectionFactory<V>

Enclosing class:

RandomProjectionLSH<V extends Vec>

public static class RandomProjectionLSH.RandomProjectionLSHFactory<V extends Vec>
extends Object
implements VectorCollectionFactory<V>

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
	RandomProjectionLSHFactory(int intsToUse, boolean inMemory) Creates a new Random Projection LSH factory that uses a full matrix of normally distributed values.
	RandomProjectionLSHFactory(int intsToUse, int poolSize) Creates a new Random Projection LSH factory that uses a pool of normally distributed values to approximate a full matrix with considerably less memory storage.
protected	RandomProjectionLSHFactory(RandomProjectionLSH.RandomProjectionLSHFactory<V> toCopy) Copy constructor

Method Summary

Modifier and Type	Method and Description
VectorCollectionFactory<V>	clone()
VectorCollection<V>	getVectorCollection(List<V> source, DistanceMetric distanceMetric) Creates a new Vector Collection from the given source using the provided metric.
VectorCollection<V>	getVectorCollection(List<V> source, DistanceMetric distanceMetric, ExecutorService threadpool) Creates a new Vector Collection from the given source using the provided metric.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RandomProjectionLSHFactory

public RandomProjectionLSHFactory(int intsToUse,
                                  boolean inMemory)

Creates a new Random Projection LSH factory that uses a full matrix of normally distributed values.

Parameters:

intsToUse - the number of integers to use for the encoding

inMemory - true to construct the full matrix in memory, or false to construct the needed values on demand. This reduces

RandomProjectionLSHFactory

public RandomProjectionLSHFactory(int intsToUse,
                                  int poolSize)

Creates a new Random Projection LSH factory that uses a pool of normally distributed values to approximate a full matrix with considerably less memory storage.

Parameters:

intsToUse - the number of integers to use for the encoding

poolSize - the number of normally distributed random variables to store. Matrix values will be pulled on demand from an index in the pool of values.

RandomProjectionLSHFactory

protected RandomProjectionLSHFactory(RandomProjectionLSH.RandomProjectionLSHFactory<V> toCopy)

Copy constructor

Parameters:

toCopy - the object to copy

Method Detail

getVectorCollection

public VectorCollection<V> getVectorCollection(List<V> source,
                                               DistanceMetric distanceMetric)

Description copied from interface: VectorCollectionFactory

Creates a new Vector Collection from the given source using the provided metric.

Specified by:

getVectorCollection in interface VectorCollectionFactory<V extends Vec>

Parameters:

source - the list of vectors to put into the collection.

distanceMetric - the distance measure to use for the space

Returns:

a new vector collection

getVectorCollection

public VectorCollection<V> getVectorCollection(List<V> source,
                                               DistanceMetric distanceMetric,
                                               ExecutorService threadpool)

Description copied from interface: VectorCollectionFactory

Creates a new Vector Collection from the given source using the provided metric.

Specified by:

getVectorCollection in interface VectorCollectionFactory<V extends Vec>

Parameters:

source - the list of vectors to put into the collection.

distanceMetric - the distance measure to use for the space

threadpool - the source for threads for multi threaded execution

Returns:

a new vector collection

clone

public VectorCollectionFactory<V> clone()

Specified by:

clone in interface VectorCollectionFactory<V extends Vec>

Overrides:

clone in class Object